More Problems

• Implement a function to find the maximum product of two numbers in an array using hashing.
• Create a program that checks if two strings are made up of the same characters using hashing.
• Write a function to determine if two strings can be rearranged to form a valid word using hashing.
• Given a string, write a program to find the total number of unique characters in a string using hashing.
• Implement a function to count the frequency of each letter in a string using a hash map.
• Create a program to find the longest substring that contains exactly k distinct characters using hashing.
• Write a function to find the first character that occurs twice in a string using a hash map.
• Given a string, write a program to find the first non-repeating character in a string using a hash map.